baber/WOPTO huggingface dataset:
Patent GB-1149301-A (GB)
Title: Process of synthesizing melamine
IPC: B29C53/00
Filed: 1967-01-16
Abstract: 1,149,301. Production of melamine. CHEMICAL CONSTRUCTION CORP. 16 Jan., 1967 [10 Feb., 1966], No. 2330/67. Heading C2C. A process for synthesizing melamine from urea comprises heating the urea in the presence of a catalyst at a temperature greater than 320 C. and, after the catalytic reaction, adding a small proportion of water vapour to the aqueous mixture from the synthesis prior to cooling from the temperature above 320 C. to condense the melamine, the minimum amount of water vapour added being in the molar ratio of at least 1: 1 relative to the cyanic acid content of the gas. The water, which is preferably added as a spray, is suitably employed in an amount of from 1: 1 to 8: 1 molar relative to the cyanic acid content of the gas and the gas itself is suitably at a temperature of 340-425 C. The cooling step may be effected by employing an aqueous quench which is suitably the liquor obtained by separation from a slurry formed by the condensation of melamine in the liquor. An apparatus is described in which the above process may be carried out.
Patent GB-1192742-A (GB)
Title: Ball Bush Assemblies
Inventor: COLEY SAMUEL ERNEST
IPC: B23Q16/04
Filed: 1967-01-17
Abstract: 1,192,742. Stamping; sub-press mechanism. ROTOLIN BEARINGS Ltd. 16 April, 1968 [17 Jan., 1967], No. 2339/67. Headings B3Q and B3W. [Also in Division F2] A die set comprises a bush 13, a ball cage 17, and a protective sleeve 20 surrounding one end of the bush, the sleeve being movable axially but restrained from removal by the flange 27, and provided with an inwardly-directed portion 28 which prevents the ball cage from escaping from the bearing. In an alternative embodiment, the sleeve comprises a flexible bellows, secured at the upper end to the bush.
Patent GB-645402-A (GB)
Title: Improvements relating to alpha-acylamido acetic ester compounds
IPC: C07C233/46
Filed: 1947-01-25
Abstract: a -Acylamido-a -acyl-substituted acetic esters are obtained by reacting an a -isonitroso-a -acyl-acetic ester with a lower aliphatic carboxylic acid and its anhydride in the presence as reducing agent of powdered zinc or iron.  The reducing agent may be added to the acid and anhydride at 10-20 DEG  C., and the isonitroso compound then added while cooling or the latter compound may first be mixed with the acid and anhydride and the reducing agent then added.  With zinc dust, the temperature is preferably held at 10-20 DEG  C. during the addition; with iron, at 25-35 DEG  C.  Stirring is continued for 2-18 hours to complete reaction.  The molar proportions of reactants are about 1 of isonitroso compound, 2.9 acid anhydride, 14.2 acid, and 5.5-6.5 zinc or iron, although the zinc may be reduced to 3.85 when added to the pre-mixed other reactants.  In this method of operation, cooling during the addition is unnecessary.  In an example, a -isonitroso-acetoacetic ester in acetic acid is added to a mixture of zinc dust, acetic acid and anhydride and the product worked up to a -acetamido-acetoacetic ester.  Specification 583,307 is referred to. The Specification as open to inspection under Sect. 91 comprises also a similar preparation of a -acylamido-a -ester or cyano-substituted acetic esters from the a -isonitroso-a -ester or cyano-substituted acetic esters.  In examples: (1) zinc dust is added to acetic anhydride and acid at 10 DEG  C., diethyl isonitroso malonate then added at below 20 DEG  C., the mixture stirred for 4 hours at room temperature, filtered, and acetamido malonic ester crystallized.  It can be condensed with gramine to give skatyl-acetamido-malonic ester in tryptophane synthesis; (2) iron dust is added similarly at 20 DEG C., followed by the isonitroso compound at 25-35 DEG  C.; (3) propionic acid and anhydride used in the process of (1) yield propionamido malonic ester; (5) a -isonitrosocyanoacetic ester similarly yields a -acetamidocyanoacetic ester; (6), (7) diethyl-a -isonitrosomalonate is converted to acetamido-malonic ester.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1463711-A (GB)
Title: Electric arc torches
IPC: B23K9/013
Filed: 1974-01-18
Abstract: 1463711 Cutting by fusion THERMAL DYNAMICS CORP 18 Jan 1974 02450/74 Heading B3V [Also in Division H5] A gas vortex stabilized plasma arc torch has a through bore 11 in which an electrode 20, a gas distributor 16 and a nozzle 12 are biased (by spring 34) into engagement, the nozzle and gas distributor having abutting plane faces in the region of which abutment are channels 17, tangential to a plasma passage 13 through the nozzle 12 and parallel to a plane end face of the electrode, for the introduction of the plasma forming and arc stablizing gas, there being grooves 18 to conduct this gas along the sides of the gas distributor 16. As described the channels 17 are formed in the abutting face of the nozzle (Fig. 2a). The relative sizes of grooves 18 and channels 17 are such that substantially the whole pressure drop of a plasma forming gas occurs across the channels 17. The electrode is centred in bore 11 by beryllium oxide sleeve 25 and by annular wedge 28. Gas distributor 16 may be made of beryllium oxide or boron nitride. Nozzle 12 is of copper. The electrode is of copper with a tungsten tip.
Patent GB-637239-A (GB)
Title: Improvements in or relating to devices for filing ledger sheets or the like
IPC: B42F17/02
Filed: 1947-01-27
Abstract: 637,239. Filing paper and like sheets. COPELAND-CHATTERSON CO., Ltd., and MANN, A. Jan. 27, 1947, No. 2480. [Class 146 (i)] In a filing tray as in Specification 368,036 for filing ledger cards, the sides of the tray are reinforced by rods H<SP>1</SP> extending to the bottoms of the sides and below them by extensions H2 parallel to the hinges F of the swingable flaps A of the tray. The rods H<SP>1</SP> and extensions H<SP>2</SP> are held by turned-in edges of the sides and ends of the tray. The end plates of the tray which are hinged at E are provided with spring-loaded locking rods D, which are made integral with release grips K, which are adapted to enter holes C in the sides of the tray, the holes C being made oval to allow for inaccuracies in the hingeing. The flaps A are provided with outturned extensions B which serve as lifting handles. Serrated strips are provided in the bottom of the tray and prevent slipping of the edges of the sheets G. Specification 331,365, [Class 146 (i)], is referred to in the Provisional Specification.
Patent GB-626373-A (GB)
Title: Improvements in or relating to abrading machines and particularly to lens edging machines
IPC: B24B9/14
Filed: 1947-01-27
Abstract: 626,373. Edging lenses &c. ABBEY, A. (American Optical Co.). Jan. 27, 1947, No. 2549. [Class 60] A lens edging or like abrading machine in which a rotary spindle carrying the work and a former is movable towards and away from the grinding wheel, the movement being determined by the co-operation of the former with a contact shoe, is provided with a control device which automatically varies the speed of rotation of the work spindle in accordance with engagement and disengagement of the former with the contact shoe. The machine comprises an edging stone 12; a spindle 17 carrying the lens 14 and a former 16 is mounted in a swinging head 15 pivotally attached to the base 11. The edging stone spindle drives through chain and sprockets a back shaft which is connected through gears 25, 26 with a work drive shaft 27. The latter drives, through gears 30, 31, a shaft 32 on which are rotatably mounted gears 33, 34 meshing respectively with gears 41, 40 on a shaft 38 which, through further gearing, rotates the work spindle 17. A clutch member 37 slidably keyed on the shaft 32 is operated by a pivoted lever 42; a spring 54 normally holds the parts in slow speed position; energization of a solenoid 57 moves them to high speed position. The solenoid 57 is under control of a micro-switch 73 to which is actuated through a push rod 76, by the contact shoe 61 when this is engaged by the former 16. Thus, when a portion of the lens requiring no more grinding is in contact with the grinding wheel the engagement of the former with the contact shoe will actuate the micro-switch so that the work spindle rotation will be speeded up.
Patent GB-1478446-A (GB)
Title: Process for sulphiding platinum-on-carbon catalysts
IPC: C07C209/36
Filed: 1976-01-22
Abstract: 1478446 Reduction of nitro-aromatic compounds RUHRCHEMIE AG 22 Jan 1976 [28 Jan 1975] 2576/76 Heading C2C [Also in Division B1] Halogen-containing amines or sulphur-containing aromatic amines are made by the reduction of the corresponding nitro-compounds with H 2  in the presence of a platinum-oncarbon catalyst which has been treated with H 2  in an aqueous medium and subsequently sulphided in the presence of H 2  (see Division B1). In an example p-chloroaminobenzene is made by the hydrogenation of p-chloronitrobenzene. Primary aryl or aliphatic amines may be reductively alkylated with a ketone and aryl disulphides may be reduced to thiophenols in the presence of the same catalysts.
Patent GB-374523-A (GB)
Title: Direction signals for motor cars and other vehicles
IPC: B60Q1/38
Filed: 1931-10-16
Abstract: 374,523. Road vehicle signals. JANMART, R., 41, Hylton Street, North Shields, Northumberland. Oct. 16, 1931, No. 2591. [Class 118 (ii).] A direction indicator for motor and other vehicles comprises a horizontal row F<H>, and a vertical row F<v> of lamps at both the front and back of the vehicle, controlled by a rotary switch D operated by an electric motor P. The wiper M is adapted to bridge a plurality of contacts C spaced peripherally, or as in Fig. 2, to leave a sector with no contacts. Thus when a switch K<v> is closed a finger of light travels vertically up the lamp rows F<V> intermittently, to signal straight ahead. Closure of a switch K<R> causes an intermittent light from left to right in the horizontal lamp rows F<H>, to signal right turn, while closure of switch K<L> reverses the motor field and consequently the direction of rotation of the rotary switch D, the light now travelling from right to left in rows FH to indicate a left turn. The lamp rows may be curved, Fig. 3, and two rows connected in parallel may be used together. The vertical rows may have arrow shaped reflectors, Fig. 4, and the rear lamps may be combined with the number plate and a stop signal. Coloured lamps or lenses may be used and the lamp casings may comprise a part of the vehicle framework. The switches K , K<R>, KL may be interlocked and controlled by a lever moving in a # shaped casing. Rear signals as above may be fitted to towed vehicles by extending the necessary cables.
Patent GB-735473-A (GB)
Title: Improvements in and relating to refrigeration apparatus
IPC: F25D11/02
Filed: 1953-01-29
Abstract: 735,473. Fluid-actuated valves. GENERAL ELECTRIC CO. Jan. 29, 1953 [Jan. 31, 1952], No. 2591/53. Class 135. [Also in Group XIII] In a secondary refrigerating system, the inlet 11 and outlet 12 of the condenser and the inlet 9 and the outlet 10 of the evaporator are connected to a reservoir 6 which contains a receptacle 13 pivoted at 16 to a fixed bracket 15 and moved by a bellows 20 subject to the reservoir pressure from one position in which liquid refrigerant in the receptacle seals the condenser inlet and outlet to stop the action of the system to another position in which the seal is broken to allow condensation to occur and hence to allow operation of the system. The bellows 20 is loaded by a spring 21, the tension of which is adjustable by a screw 23 to vary the setting of the system. Reference has been directed by the Comptroller to Specification 669,099.
Patent GB-1427464-A (GB)
Title: Register pin means
IPC: B65H9/00
Filed: 1974-01-21
Abstract: 1427464 Registration pin MISOMEX A B 21 Jan 1974 [6 Feb 1973] 02669/74 Heading G2A An adjustable registration pin 5 accomodated in the plate 1 of a machine bed comprises a head 13 and a shaft 12 within a guide 18 which rests on a seat member 7 screwed into the base of a housing 6 and which is adjustable laterally by the action of four screws 20 in housing 6 on a conical surface 19 of guide 18. Pin 5 may be pressed into housing 6 against the action of a spring 17 situated  between shaft 12 and the inner end of the closed bore 10 of an adjustable bottom screw 9 within seat member 7, a guide pin 16 which extends through shaft 12 being vertically movable in slots 11 in bottom screw 9. Pin 5 may be retracted into housing 6 by rotating pin 5 and consequently bottom screw 9. In another embodiment, Fig. 3 (not shown), housing 6 is screwed into plate 1 and has a locking nut (24).
Patent GB-179238-A (GB)
Title: Improvements relating to metal cutting and like presses
IPC: B21D43/22
Filed: 1921-01-20
Abstract: 179,238. Griffiths, H. A., and Griffiths, R. H. Jan. 20, 1921. Punching.-In a press for cutting-out blanks from metal sheets, the blanks falling from the cutting-tools are received by a number of detachable receptacles located in place on a turntable looked in position by a catch or bolt. In the form shown, in which three circular blanks are cut from a metal sheet in each stroke of the press, the blanks fall into three receptacles c positioned by locating pieces d on a turntable a, which is locked in position by a spring bolt e operated by a hand-lever g. When a row of receptacles are filled, the turntable is rotated by hand to bring the next row into position, and the filled receptacles are replaced by empty ones.
Patent GB-700054-A (GB)
Title: New or improved device for lubricating saw-chains
IPC: F16H57/05
Filed: 1952-02-01
Abstract: 700,054. Lubricating.. JOHNSEN, T., and BUSK, G. H. K. Feb. 1, 1952 [Feb. 9, 1951], No. 2686/52. Class 12(3) A motor-driven chain saw of the type provided with an oil container having an opening at the bottom through which oil is delivered on to the driving wheel of the chain when the motor is coupled to the driving wheel, is characterized in that a lever is mounted on the oil container and is maintained in raised position by a spring, the lever on being depressed acting on a release stud to disconnect the coupling between the motor and the driving wheel, and simultaneously causing a valve spindle to close the outlet from the oil container. As shown, a saw chain 1 is provided with a guide 2 on which is mounted an oil container 5 separated by a wall 6 from a housing for the driving motor. The chain-driving wheel 3 is engaged with the motor by means of a stud 8 which on being depressed by a lever 9 uncouples the wheel from the motor. The lever also acts, through a rod 12 and a lever 13, on a valve spindle 11 whereby an oil outlet 18 is closed. On release of the lever 9 the outlet 18 is opened and oil drips upon the driving wheel 3 and is flung on to the chain 1. In a modification the controlling lever is a lever of the second order, the movement of its arm towards the release stud for disengaging the drive being in the same direction as the movement of the valve spindle to close the oil outlet.
Patent GB-1126985-A (GB)
Title: A tape winding or unwinding device
IPC: B65H23/04
Filed: 1966-01-21
Abstract: 1,126,985. Automatic control of reeling. O.C. SELDEN. Jan. 21, 1966. No.2858/66. Heading G3R. Changes in the length of a loop of tape in a winding or unwinding system operate a changeover switch to determine whether A. C. is supplied directly, or indirectly through a transformer and rectifier, to a shaded pole electric motor driving the supply or take-up reel so that the reel is driven or braked as necessary to maintain the length of the loop constant. As described, tape fed from a reel driven by the motor is formed into a loop before passing to a recorder or reader. If the length of the loop increases to a predetermined value, a pulley rinding at the bottom of the loop operates a changeover switch to replace the A. C. supply to the motor by a D. C. supply so that the reel is braked and loop length restored within tolerance. The D. C. supply is obtained from the A. C. supply through a step-down transformer and bridge rectifier. A similar system for controlling tape being wound on a reel is described.
Patent GB-275493-A (GB)
Title: Improvements in fabric stretching means
IPC: D06C7/00
Filed: 1927-02-01
Abstract: 275,493. Kasanof, M. M. Feb. 1, 1927. Shaping and stretching tubular goods upon cores and internal frames.-A device for steaming and stretching tubular fabrics comprise a. steam pipe 13 on to which the fabric is packed, and a hollow body 10 which is detachably connected to the top of the pipe 13. Stretching rings 35 of various sizes can be fixed by means of screws and keyhole slots 37, 36 around the body 10 which carries at its top an adjustable spreading frame 21. Steam from the pipe 13 passes through holes 17 into the top of a bell 18 and escapes through other holes 20 into a pocket in the fabric immediately below the ring 35. Any water of condensation escapes by the pipe 33. Reference has been directed by the Comptroller to Specification 268,659.
Patent GB-287128-A (GB)
Title: Method of manufacturing glue in small pieces coated with a powder
IPC: C09H9/04
Filed: 1928-01-30
Abstract: 287,128. Stockholms Benmj÷lsfabriks Aktiebolag. March 16, 1927, [Convention date]. Glue.-Small pieces of glue produced in any suitable manner, and while in a glutinous condition, are introduced into or sprinkled with a powder to form a coating on them. The pieces oi glue may be made by dropping a glue solution on to a stationary bed or into a liquid, or by dividing leaves, cakes, blocks, rods &c. of glue. Specification 284,704 is referred to.
Patent GB-1084943-A (GB)
Title: Illumination device for photo-reproduction and enlarging apparatus
IPC: G03B27/54
Filed: 1965-01-22
Abstract: 1,084,943. Lighting arrangements. DURST BOLZANO FABBRICA MACCHINE ED APPARECCHI FOTOTECNICI S.p.A. Jan. 22, 1965 [April 20, 1964], No.2970/65. Heading G2A. [Also in Division F4] An illumination device for photo-reproduction and enlarging apparatus consists of two separately energizable gas discharge tubes 7, 8 one of which is coiled around the other, and the inner 7 of which is movable by a rack and pinion 10. When a small negative 3 is enlarged by means of a lens 2, the inner tube 7 only is used in its lowest position and when a large negative is enlarged by a lens 1, of longer focal length, both tubes are used, the inner tube 7 being raised to illuminate a mirror assembly 6 around the tube 8 as well as the centre of a diffusion plate 5. A fraction of the light from the tube 7 passes between the coils of the tube 8 to reach the plate 5 either directly or by reflection thus increasing the illumination of the edges of the plate 5. Means may be provided for inclining the mirrors on axes forming a rectangle in a plane perpendicular to the optical axis of the illuminating beam.
Patent GB-1513111-A (GB)
Title: Nickel-copper-molybdenum methanation catalyst
IPC: B01J23/88
Filed: 1976-01-27
Abstract: 1513111 Methanation catalyst HARSHAW CHEMICAL CO 27 Jan 1976 [10 March 1975] 03020/76 Heading B1E A supported methanation catalyst, for the production of gaseous hydrocarbon mixtures composed predominantly of methane with up to 5mol% of ethane on a water-free basis, is prepared by reduction of a calcium complex of oxides on a catalyst support, the complex being defined by Ni a  Cu b  Mo c  O x  where a and c are 1-9 when b=1 and x is a number determined by the valence requirements of the other elements present, the support comprising at least 50% of the total weight of catalyst, the remainder including, based on total catalyst, 5-20% by weight of molybdenum oxide, 5-40% by weight of nickel oxide and copper oxide where the weight ratio of nickel oxide to copper oxide is 1:1-9:1. The specified catalyst supported on gamma alumina is exemplified.
Patent GB-508395-A (GB)
Title: Improvements in or relating to means for preventing the deposition of moisture and formation of ice on the wind screens of automobiles, aircraft and the like
IPC: B60S1/54
Filed: 1938-02-01
Abstract: 508,395. Preventing dimming of windscreens; unit air-heaters. BAITA, P. Feb. 1, 1938, Nos. 3105, 3106, and 3107. Convention dates, Feb. 1, 1937, July 29, 1937, and Dec. 31, 1937. (Classes 20 (iii) and 137] Heated air is delivered between the panels of a double windscreen 5, in order to prevent dimming thereof, from a chamber 6 surrounding the engine exhaust-pipe 4, to which air is conducted by a pipe 7 having a funnel-shaped mouth 71 opening towards the engine fan 3, and from which it is led by a pipe 8 terminating in a flat triangular-shaped nozzle, or nozzles 9, each having a long, narrow, slot opening into the space between the windscreen panels. Adjustable apertures may be provided in the windscreen to regulate the circulation of air, and control valves'may also be fitted in the airconducting. pipes 7, 8. The funnel-shaped inlet 71 may be provided with a filter. The Specification as open to inspection under Sect. 91 describes apparatus, Fig. 3 (Cancelled), for preventing the dimming of shop windows and the like, or for heating rooms, in which air heated by an electrical resistance 12 is delivered to a triangular-shaped nozzle 9 by means of a fan 15. Alternatively, the air may be heated by steam or hot-water pipes. It is also stated that such apparatus may be used to prevent the formation of ice on aircraft. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1043229-A (GB)
Title: Process and apparatus for the continuous production of rods or other sections from thermoplastics
Inventor: PFLUEGER RICHARD
IPC: B29C48/06
Filed: 1964-01-24
Abstract: 1,043,229. Moulding thermoplastic materials. BADISCHE ANILIN- & SODA FABRIK A.G. Jan. 24, 1964 [June 7, 1963], No. 3110/64. Heading B5A. Rods and other sections of polyamide, polyethylene, polypropylene, polyformaldehyde, and polymers of trioxane are formed by passing the molten thermoplastic material through a cooled die or mould 5, drawing off the shaped section, and stirring the material in the molten cone 4 formed in the interior of the solidified section. The stirring may be effected by a helical stirrer 2 extending from the end of the screw 1 of an extruder supplying the molten thermoplastic material. Alternatively the molten thermoplastic material is supplied by a pump, or is fed by gravity to pass vertically downwards through the die or mould.
Patent GB-185701-A (GB)
Title: Improvements in strings for musical instruments
IPC: G10D3/10
Filed: 1922-02-02
Abstract: 185,701. Cramer, H., and Hengstenberg, W. Feb. 7, 1922. Strings for musical instruments are made of non-rusting steel.
Patent GB-360759-A (GB)
Title: Improvements in and relating to telescopic and rotatable wheeled cranes
IPC: B66C23/34
Filed: 1931-01-31
Abstract: 360,759. Jib cranes end stop gears. TRESSE, P., 166, Boulevard de l'EgalitÚ, Calais, France. Jan. 31, 1931, No. 3157. [Classes 78 (iv) and 78 (v).] A crane comprises a standard 10 and a mast 15, telescopically received therein, which supports a jib structure 16. The standard is detachably mounted on a framework 1 which is mounted on a turntable 4 supported on a carriage running on rails. In order to erect the crane the carriage is clamped to the rails and the standard placed in the dotted line position on rollers 6 and pushed along until a hook thereon engages the axle of the rollers. A cable 23, connected to a winch 2, is attached to the end of the standard 10 and the winch hand operated so as to raise the standard to a vertical position in which it is held by a pin 24. The 'cable 23 is now disconnected and passed round pulleys 17 to constitute the hoisting cable. The mast 15 is then raised by a cable 12, passing over pulleys 11, 22, and connected to a hand winch 7, and is secured in position by clamps 13. When the hoisting cable reaches its uppermost position a weight 25 on the hook engages a ring 19, pivoted on a casing 18, so as to tension the cable and actuate a striking,gear 21 to declutch the winch 2. The counterweight of the crane is supported on a member 8.